JPH0261362B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a groove cutting machine equipped with a dustproof device,
The present invention provides a groove cutting machine that is particularly useful for cutting materials such as autoclave-cured lightweight aerated concrete (ALC) where the cutting waste becomes powder when cutting grooves.

When cutting a groove of a certain depth and a certain width on the surface of a smooth plate material, the cutting waste has conventionally been removed from the cutting waste outlet provided in the cover 6 for forming the cutter chamber of the cutter 14, as shown in FIG. The waste was discharged from the nozzle 20, but when cutting wood or the like, the chips are large and have a certain shape, so they are easy to handle, so the above-mentioned discharge nozzle 20 is used to discharge the chips to the outside. It was completely possible without any difficulty. However, if the cutting waste is in the form of dust, the discharge from the above-mentioned discharge nozzle 20 will scatter the dust around, which poses a problem in terms of work management. In addition, when cutting wood or lightweight aerated concrete, etc., the cutting machine normally uses a support shaft 4 as a fulcrum to cut the tip of the main body 1 into the long hole 12 of the cutting depth adjustment guide 11, as shown in FIG. The cutting depth is adjusted by moving the main body 1 up and down along the vertical axis, but when the cutting depth is shallow, a gap A is created between the base plate 5 and the main body, and cutting waste is removed from this gap A. May scatter. Furthermore, as the cutting process progresses, the high-speed rotating action of the cutter 14 causes the unavoidable situation in which cutting waste is scattered toward the rear of the main body 1 through the cutting groove that is continuously formed from the cutting part to the rear of the main body 1. However, especially when the cutting waste is in the form of dust, such as lightweight aerated concrete, the dust is scattered all over from the front and rear parts of the main body 1, causing problems in work management, as described above. In addition, it was beginning to have an impact on the workers themselves.

The present invention has improved the above-mentioned drawbacks, and will be explained with reference to the embodiments shown in FIGS. 3 is a switch, 4 is a support shaft provided at the rear end of the main body 1, 5 is a base plate,
6 is a cover for forming a cutter chamber, and 7 is a nozzle provided on the cover 6 for forming a cutter chamber, and a hose or the like connected to a vacuum type dust collector (not shown) is connected to the nozzle 7. 8 is a locking piece provided at the front of the main body 1, 9 is a sliding pin for the locking piece 8, and 10 is a wing nut. 11 is a cutting depth adjustment guide established from the base plate 5; 12 is an adjustment guide 1;
1 is an elongated hole for guiding the sliding pin 9, 13 is a cutting depth indicating scale of the adjustment guide 11, 14 is a cutter, 15 is a plate for indicating the blade width of the cutter 14 mounted and fixed on the base plate, Reference numeral 16 denotes a grooved cutting waste guide that is formed to have a U-shaped cross section so as to cover the front part of the cutter 14 and whose base is fixed to the base plate 5. The upper part of the guide guide 16 is curved toward the inside of the main body 1. It is desirable that the 1
Reference numeral 7 denotes a shield plate made of an elastic material and having approximately the same width as the cutting groove width, which is detachably provided on the main body 1 and facing the rear end of the cutting notch 18 of the base plate 5.
The tip lip portion 17' is brought into sliding contact with the bottom of the cut groove. 19 indicates a cutter driving motor.

The present invention is constructed as described above, and the cutting depth of the groove is adjusted by the locking piece 8 provided at the front of the main body 1 using the support shaft 4 pivotally attached to the rear end of the main body 1 as a fulcrum. Slide the sliding pin 9 along the guide slot 12 of the cutting depth adjustment guide 11, adjust the cutting depth with the indication scale 13, and then tighten the locking piece 8, that is, the main body 1 with the wing nut 10. This is done by fixing it at a position where the desired depth is obtained, and the locking piece 8 is slidable along the aforementioned cutting depth adjustment guide 11 and the guide slot 12 provided in the adjustment guide 11.
Since the cut depth adjustment mechanism consisting of the sliding pin 9 is provided on the outside of the cutter chamber forming cover, the above-mentioned cut depth adjustment can be performed safely and reliably. In this adjustment, if the depth of cut is shallow, a gap will be created between the base plate 5 and the cover 6 for forming the cutter chamber, and when groove cutting is started, cutting debris will tend to scatter outside through the gap. However, in the present invention, since the grooved cutting waste guiding guide 16 is provided to cover the front part of the cutter 14, the dust captured inside the cutter chamber is transferred to the cutter chamber cover 6 as the cutter 14 rotates. The cutting waste is guided into the interior and grooves by the guide 16 and sucked into the vacuum dust collector through the nozzle 7 provided on the cover 6 for forming the cutter chamber. That is, in the present invention, the dust to be dispersed is
The groove cutting waste guiding guide 16 works effectively, and the synergistic effect with the action of the vacuum dust collector prevents dust from scattering from the above-mentioned gap.

Further, a shield plate 17 made of an elastic material and having the same width as the cutting groove is provided facing the rear end of the cutting notch 18 provided on the base plate 5, and the tip lip portion 17' of the shield plate 17 slides into the cut groove. Because it is in contact with
As cutting progresses, it is also possible to prevent dust from scattering through the grooves that have already been formed.

As mentioned above, the present invention has an extremely simple configuration, and can be used to form cutting grooves in materials such as lightweight aerated concrete, where cutting waste becomes dust, which has been considered difficult in the past. It is possible to form cutting grooves without scattering any cutting debris, and the effect is extremely remarkable.

[Brief explanation of the drawing]

Fig. 1 is a side view of the groove cutting machine of the present invention, Fig. 2 is a plan view, Fig. 3 is a bottom view, and Fig. 4 is A of Fig. 2.
5 is a back view of FIG. 1, FIG. 6 and 7 are a right side view and left side view of FIG. 1, respectively, and FIG. 8 is a sectional view taken along line A. FIG. 6... Cover for forming cutter chamber, 7... Nozzle, 11... Cutting depth adjustment guide, 16... Groove cutting waste guiding guide, 17... Shield plate.

Claims (1)

[Claims] 1 It has a base plate that constantly slides on the workpiece, and a cover for forming a cutter chamber to which a cutter is attached, and further has a cutting depth established from the base plate provided on the outside front of the cover for forming the cutter chamber. a cutting depth adjustment guide, a cut depth adjustment pin provided on the outside front of the cutter chamber forming cover, a hose connection nozzle provided on the cutter chamber forming cover, and a cutter covered in front of the cutter. A groove cutting waste guiding guide having a base formed in a U-shape in cross section is fixed to the base guide, and a cutter forming cover is provided at a position corresponding to the rear end of the cutting notch of the base plate. A groove cutting machine characterized by having a shield plate made of an elastic material and having a width that is substantially the same as the cutting groove width that slides on the groove bottom.